I know this is an against the grain (for HN at least) take, but I don't disagree.

If you're not working on, or supporting, the company's product, you MAY have a BS job.

Good example: Twitter, which functioned well after layoffs of 80% or so (the owner's persona has damaged the revenue and reputation extensively, but the product itself has been fine). They're maybe the boldest, but hardly the only company in the past couple of years to do mass layoffs and not collapse at the core.

With Google of course, many projects are at some point considered core, to be dismissed later, so the line between "product" and "BS" is blurry and changing.